US scientists calculated that Santa would have to visit 822 homes a second to deliver all the world's presents on Christmas Eve, travelling at 650 miles a second.
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In Greek legend, malicious creatures called Kallikantzaroi sometimes play troublesome pranks at Christmas time. In order to get rid of them, salt or an old shoe is burnt. The pungent burning stench drives off, or at least helps discourage, the Kallikantza
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Robins on cards were a joke 150 years ago when postmen wore red tunics and were named after them.
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At Christmas, it is traditional to exchange kisses beneath the mistletoe tree. In ancient Scandinavia, mistletoe was associated with peace and friendship. That may account for the custom of "kissing beneath the mistletoe".
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The abbreviation Xmas isn't irreligious. The letter X is a Greek abbreviation for Christ.
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The definition of a white Christmas in the UK is for a single snow flake (perhaps amongst a shower of mixed rain and snow) to be observed falling in the 24 hours of December 25th.
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Although now mostly vegetarian, in Victorian times, mince pies were made with beef and spices.
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